<template>
  <template v-if="renderLocalIcon">
    <svg aria-hidden="true" width="1em" height="1em" v-bind="bindAttrs">
      <use :href="symbolId" fill="currentColor" />
    </svg>
  </template>
  <template v-else>
    <Icon v-if="icon" :icon="icon" v-bind="bindAttrs" />
  </template>
</template>
<script setup lang="ts">
import { computed, useAttrs } from 'vue';
import { Icon } from '@iconify/vue';

defineOptions({ name: 'EgIcon' });

/**
 * 图标组件
 * - 支持iconify和本地svg图标
 * - 同时传递了icon和localIcon，localIcon会优先渲染
 */
const props = defineProps({
  /** 图标名称 */
  icon: {
    type: String,
  },
  /** 本地svg的文件名 */
  localIcon: {
    type: String,
  },
});
const attrs = useAttrs();
const bindAttrs = computed<{ class: string; style: string }>(() => ({
  class: (attrs.class as string) || '',
  style: (attrs.style as string) || ''
}));

const symbolId = computed(() => {
  const { VITE_ICON_LOCAL_PREFIX: prefix } = import.meta.env;

  const defaultLocalIcon = 'no-icon';

  const icon = props.localIcon || defaultLocalIcon;

  return `#${prefix}-${icon}`;
});

/** 渲染本地icon */
const renderLocalIcon = computed(() => props.localIcon || !props.icon);
</script>

<style scoped>

</style>